Got in about 5 pm yesterday,bag came out quick and onto Taxi line with no wait.Driver asks where to and I say Rio.Sure enough he heads right to the tunnel entrance and that was bumper to bumper traffic.He then asks what I'm doing in town and I say I come here all the time,and ask him why he's taking the interstate. He then asks what I normally pay and I say $19..He says if I turn off the meter will I give him $19 in cash.I say sure I'll give you $20..(Meantime I made sure he knew I was taking his ID pix on the dashboard). He shuts it off on the interstate just south of Mandalay Bay at $13 and change..We get to the Rio,I give him $20 and he starts with That's it? I just tell him I could call the TA on him and he keeps yapping something in bad English.. I just head away towards the door.Really did not want to question the tactic while still driving but I was a bit annoyed about the traffic and spoke up..